Melotte



(N9 Model.)

G. W. MELOTTE.

BLOW PIPE.

No. 394,657; Patented Dec. 18, 1888.

UNITED STATES PATENT OFFICE.

GEORGE 'ASHINGTON MELOTTE, OF ITIIAFA, NElY YORK.

BLOW-PIPE.

SPECIFICATION forming part of Letters Patent No. 394,657, dated December 18, 1888.

Application filed May 28, 1887. $erial No. 239,659. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE WAsHTNG'roN MELOTTE, a citizen of the United States, and a resident of Ithaca, Tompkins county, New York, have invented an Improved Blow-Pipe, with especial reference to satisfactory work of dentists, in chemistry, and for jewelers, of which the following is a specification.

. My invention relates both to the construction of the several parts of my blow-pipe, which enables it to be easily manufaciu ed, and to its adaptation to convenient use; and my invention will be apparent as I describe it.

Figure 1 is a side elevation of my blowpipe. Fig. 1 is. a sectional view of the hooksocket d. Fig. 2 is a longitudinal section of its central tube-junctions and gas-faucet. Fig. 3 is a transverse elevation through the central parts. Fig. 3 is a sectional elevation of the faucet-aperture. Fig. 4.. is a sectional view of the nozzle end or point. Figs. 4 and t" are views of the diaphragm, one with teethlike slots and the other with round apertures. Fig. 5 is a pipe modified by providing it with a 2 5 right-angled bend and a handle for the largercalibered pipe. Fig. 6 is a modified form for gases under high pressure.

Detached parts are indicated by numbers with letters further on.

In the figures, a is the larger end of my pipe, to which an airblast, usually by the mouth of the operator, is applied, made of any suitable sized pipe with an even-sized caliber from the end a to the junction with the cen- 3 5 tral bed-piece, c, and Z) is a smaller-sizcd-calibered pipe extending from the bed-piece to the nozzle-piece b, and is made of an even-calibered piece of pipe suitably smaller in size than the pipe (1, and containing an inner pipe,

f, which occupies about a half of the center of the caliber of the piece I). This construction of the parts a, Z), and f in the manner just named, and with a junction to the central bed-piece, is for the purpose of manu- 5 facturing the pipe readily by systematic factory work, these several parts being cut off of long pieces of commercial brass pipe, and then turn ed in ordinary lathes, and by gages fitted to each other in any given quantities, as are turned and fitted the central pieces, so as to make each part in quantities adapted to its place on the central piece.

The central bedpiece, c, is not used for thc faucet; but the faucet-piece c is made separate from the bed-piece also, because of the division of labor just spoken of. The faucetpiece 0 contains a plain faucet. and an entrance-tube for gases. The faucet-plug is provided with the V-shaped side cut, (I", the use of which is that when the main oriiicc through the faucet-plug is shut a small quan tity of gas shall go through this small V- shaped aperture of the faucet, as nicely ad justed by the set-screw m of the bridlc m, and keep alive a small flame at the nozzle g" of the pipe. From the faucet-plug projects the attached linger-leverj rearwardly, so as to be in reach of the finger of the operator of the pipe; and to regulate the action of this lever, as well as to guide the finger of the operator, the standard in" is put about this lever. This standard has its curved lower part that surrounds the pipe (0 near the center piece, 1', whence it extends straight upward until just above the lever j, whcrc it is curved over the lever and down by its other side, thus encircling, or nearly so, the lever at a distance from it, which allows thc lcvcr to move freely.

A set-screw, m, is in the top of the upper curve of the standard, the use of which is to nicely adjust the size of the V-shaped aperture gas-escape and to check thc upward thrust of the lever by the spring (1", which spring is fast at one end to the standartl,\\'hcre it encircles the pipe (1, and [its at its other end into a socket in the lover.

The nozzle I) is screwed on the nozzlc end of the pipe, and has an aperturein its cud for the final escape of the air and gas or gases. 0 At its inner end is a diaphragm, g, which is perforated with the holes shown in Fig. -l-", or has the slots shown in Fig. 4:. Its usc is to support in its central aperture the end of the pipe f in the middle of the pipe I), and cs- 5 pecially to divide the blast of airinto several jets. That the mingling of gas and air or of two gases by the separated channels may be more perfect, a tapering pin or point, f, Fig.

4, in the center of the nozzle 1'), is at times demingled state and be forcibly ejected.

sirable to further aid in the production of a hot even flame.

Another standard, h', supports the pipe when in general use. It has the pivoted piece 71' 011 its top, which receives in an aperture the side stud of the central piece, 0, and a base, hflwith'a set-screw for adjusting the rod-standard h in the hollow of the base.

For special uses the standard just indicated and described is dispensed with. A form for such a use is indicated in Fig. 5, Where the pipe Z) is fixed to the central piece at right angles to the pipe at, and has on it the handle a, the other parts being the same as have been described.

In Fig. (3 the flexible pipe n and the in-' In the abovedescribed blow-pipe I claim the following as -my invention:

1. The combination, with the pipe-sections and with the bed-piece between them, of the plug-piece having a faucet-plug and lever, a lever-spring, and lever-bridle, one end of the bridle being attached to the blow-pipe and the other end extending about and over the lever, and provided with a set-screw, as shown and described.

' 2. The faucet-plug provided with the V- shaped orifice cl additional to the main orifice d, in combination with the plug-piece c, lever j, bridle m, set-screw m bed-piece c, and pipes a and b, as shown and described.

3. In combination With the described blowpipe having the bed-piece 0, provided With the projecting stud h, the double-jointed top piece on the standard h, the standard, and

means for adjusting the same, whereby the elevation and inclination of the blow-pipe are provided for, as set forth.

GEORGE WASHINGTON MELOTTE.

Vitnesses:

SAMUEL J. PARKER, SHERIDAN SLooUM. 

